If you are placing the desk in the living room, consider one of the more classically styled desks such as an armoire or a roll-top desk. These are excellent because they close and can hide important papers. There are often models which can lock for added security.

I have created a total body work-out for you that can be done in a relatively small space. The cost of the exercise ball should be affordable for most people with a job (certainly cheaper than an expensive office chair).

This is a static (or motionless exercise) where you assume the same position you did to do a push-up on the ball (with your arms straight out). Hold in that position for as long as you can or a count of 60 then relax. Repeat this for 3 sets total.